This is a submersible pump designed primarily for dirty/grey water (not heavy sewage with large solids, but it handles debris better than clean-water pumps).
Common uses:
• Draining flooded areas, basements, or construction pits
• Emptying ponds, pools, or water tanks with leaves/sludge
• Garden irrigation or water transfer from wells/collection tanks
• Emergency flood cleanup
• Circulating or draining grey water (e.g., from washing machines, showers — not toilet waste)